.page-about {
  background: var(--c-paper);
  color: var(--c-deep);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: clip;
}

.page-about section {
  margin: 0;
}

.page-about h1,
.page-about h2,
.page-about h3,
.page-about h4 {
  font-family: var(--font-display);
  color: var(--c-deep);
  line-height: 1.2;
}

.page-about h2 {
  font-size: clamp(24px, 3vw, 36px);
  margin: 0;
}

.page-about h3 {
  font-size: 18px;
  margin: 0 0 10px;
}

.page-about p {
  margin: 0 0 14px;
}

.page-about .about-breadcrumb-row {
  background: var(--c-paper);
  border-bottom: 1px solid rgba(26, 42, 58, 0.08);
  padding-block: 12px;
}

.page-about .about-breadcrumb-row .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--c-gray);
}

.page-about .about-breadcrumb-row a {
  color: var(--c-deep);
  text-underline-offset: 4px;
  text-decoration-color: var(--c-green);
}

.page-about .about-breadcrumb-row a:hover,
.page-about .about-breadcrumb-row a:focus-visible {
  color: var(--c-green);
}

.page-about .about-deep-section {
  background: var(--c-deep);
}

.page-about .about-deep-section h2,
.page-about .about-deep-section h3 {
  color: var(--c-white);
}

.page-about .about-hero {
  position: relative;
  padding-block: clamp(30px, 6vw, 72px) 0;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(0, 255, 136, 0.08) 0%, transparent 40%),
    var(--c-deep);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, transparent 0 18px, rgba(255, 255, 255, 0.015) 18px 19px);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(240px, 3fr);
    gap: 32px;
    align-items: end;
  }
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-green);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-about .about-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--c-green);
}

.page-about .about-hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--c-white);
  margin: 0 0 16px;
}

.page-about .about-h1-accent {
  color: var(--c-green);
}

.page-about .about-hero-lead {
  max-width: 560px;
  margin-bottom: 24px;
  font-size: clamp(15px, 1.6vw, 18px);
  color: rgba(255, 255, 255, 0.82);
}

.page-about .about-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.page-about .about-hero-links .btn-ghost {
  border-color: rgba(255, 255, 255, 0.32);
  color: var(--c-white);
}

.page-about .about-hero-links .btn-ghost:hover,
.page-about .about-hero-links .btn-ghost:focus-visible {
  background: rgba(255, 255, 255, 0.1);
}

.page-about .about-hero-metrics {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

@media (min-width: 900px) {
  .page-about .about-hero-metrics {
    grid-template-columns: 1fr;
    width: 260px;
  }
}

.page-about .about-hero-metric-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 3px solid var(--c-green);
  padding: 14px 16px;
}

.page-about .about-hero-metric-card-accent {
  background: var(--c-green);
  border-left-color: var(--c-green);
  color: var(--c-dark);
}

.page-about .about-hero-metric-label {
  display: block;
  font-size: 13px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 6px;
}

.page-about .about-hero-metric-card-accent .about-hero-metric-label {
  color: rgba(13, 27, 42, 0.72);
}

.page-about .about-hero-metric-value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--c-white);
}

.page-about .about-hero-metric-card-accent .about-hero-metric-value {
  color: var(--c-dark);
}

.page-about .about-hero-figure {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 30px auto 0;
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: polygon(0 20px, 20px 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-about .about-section {
  padding-block: clamp(40px, 7vw, 88px);
}

.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 2px solid rgba(26, 42, 58, 0.08);
}

.page-about .about-section-head .section-index {
  min-width: 48px;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-green);
  -webkit-text-stroke: 1px var(--c-deep);
}

.page-about .about-section-head-light {
  border-bottom-color: rgba(255, 255, 255, 0.15);
}

.page-about .about-section-head-light .section-index {
  -webkit-text-stroke: 1px var(--c-green);
  color: transparent;
}

.page-about .about-head-text {
  flex: 1;
}

.page-about .about-sub {
  color: var(--c-gray);
  font-size: 14px;
  margin-top: 6px;
}

.page-about .about-sub-light {
  color: rgba(255, 255, 255, 0.65);
}

.page-about .about-editorial {
  display: grid;
  gap: 20px;
}

@media (min-width: 900px) {
  .page-about .about-editorial {
    grid-template-columns: minmax(200px, 3fr) minmax(0, 7fr);
    column-gap: 44px;
  }
}

.page-about .about-col-narrow {
  position: relative;
  border-left: 3px solid var(--c-deep);
  padding-left: 16px;
}

.page-about .about-col-narrow p {
  font-size: 15px;
  margin-bottom: 12px;
}

.page-about .about-note-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-green);
}

@media (min-width: 900px) {
  .page-about .about-col-wide {
    border-left: 1px solid rgba(26, 42, 58, 0.12);
    padding-left: 44px;
  }
}

.page-about .about-col-wide p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.page-about .about-upgrade {
  padding-block: clamp(40px, 7vw, 80px);
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    var(--c-deep);
  background-size: 32px 32px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 36px) 100%, 0 100%);
}

.page-about .about-upgrade-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-about .about-upgrade-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
  }
}

.page-about .about-upgrade-main {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

.page-about .about-status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 18px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.18);
}

.page-about .about-status-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.page-about .about-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.15);
}

.page-about .about-dot-red {
  background: var(--c-red);
}

.page-about .about-dot-yellow {
  background: var(--c-yellow);
}

.page-about .about-dot-green {
  background: var(--c-success);
}

.page-about .about-upgrade-aside {
  display: grid;
  gap: 12px;
}

.page-about .about-upgrade-metric {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 3px solid var(--c-green);
  padding: 16px 18px;
}

.page-about .about-metric-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--c-green);
}

.page-about .about-metric-label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.74);
}

.page-about .about-scale-wrap {
  margin-top: 28px;
}

.page-about .about-scale-numbers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (min-width: 900px) {
  .page-about .about-scale-numbers {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}

.page-about .about-stat-card {
  background: var(--c-white);
  border: 1px solid rgba(26, 42, 58, 0.08);
  border-left: 4px solid var(--c-green);
  padding: 18px 16px;
  transition: box-shadow var(--ease), transform var(--ease), border-color var(--ease);
}

@media (hover: hover) {
  .page-about .about-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26, 42, 58, 0.08);
  }
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.05;
  color: var(--c-deep);
  margin-bottom: 6px;
  transition: color var(--ease);
}

@media (hover: hover) {
  .page-about .about-stat-card:hover .about-stat-num {
    color: var(--c-green);
  }
}

.page-about .about-stat-label {
  font-size: 14px;
  line-height: 1.4;
  color: var(--c-gray);
}

.page-about .about-scale-note {
  margin-top: 24px;
  padding: 20px;
  background: var(--c-white);
  border-left: 4px solid var(--c-deep);
  box-shadow: 6px 6px 0 rgba(26, 42, 58, 0.06);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-map-row {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

@media (min-width: 900px) {
  .page-about .about-map-row {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: stretch;
  }
}

.page-about .about-map-img {
  overflow: hidden;
}

.page-about .about-map-img img,
.page-about .about-cert-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 240px;
}

.page-about .about-map-img img {
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-about .about-map-note {
  padding: clamp(20px, 3vw, 28px);
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.08) 0%, transparent 55%),
    var(--c-deep);
  color: rgba(255, 255, 255, 0.8);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-map-note h3 {
  color: var(--c-green);
  font-size: 20px;
}

.page-about .about-map-note p {
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-map-note .btn-ghost {
  margin-top: 16px;
  border-color: rgba(0, 255, 136, 0.5);
  color: var(--c-green);
  background: transparent;
}

.page-about .about-map-note .btn-ghost:hover,
.page-about .about-map-note .btn-ghost:focus-visible {
  background: var(--c-green);
  color: var(--c-dark);
}

.page-about .about-milestone-section {
  padding-block: clamp(40px, 7vw, 80px);
  background:
    radial-gradient(circle at 85% 10%, rgba(0, 255, 136, 0.07) 0%, transparent 32%),
    var(--c-dark);
}

.page-about .about-milestone-section .about-section-head {
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.page-about .about-milestone-section h2 {
  color: var(--c-white);
}

.page-about .about-timeline-wrap {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-about .about-timeline-wrap {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

.page-about .about-timeline-side {
  position: relative;
}

@media (min-width: 900px) {
  .page-about .about-timeline-side {
    position: sticky;
    top: 96px;
  }
}

.page-about .about-timeline-rail {
  position: relative;
  overflow: visible;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 2px;
}

@media (min-width: 900px) {
  .page-about .about-timeline-rail {
    width: 4px;
    height: 340px;
    margin-inline: auto;
  }
}

.page-about .about-rail-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--c-green);
  border: 2px solid var(--c-dark);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  top: 50%;
  left: calc(var(--pos) * 1%);
}

@media (min-width: 900px) {
  .page-about .about-rail-dot {
    top: calc(var(--pos) * 1%);
    left: 50%;
  }
}

.page-about .about-rail-year {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
  color: var(--c-white);
  background: rgba(13, 27, 42, 0.88);
  border: 1px solid rgba(0, 255, 136, 0.4);
  padding: 4px 8px;
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-about .about-rail-year {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
  }
}

@media (min-width: 900px) and (hover: hover) {
  .page-about .about-rail-year {
    opacity: 0.4;
    transition: opacity var(--ease);
  }

  .page-about .about-rail-dot:hover .about-rail-year,
  .page-about .about-rail-dot:focus-visible .about-rail-year {
    opacity: 1;
  }
}

.page-about .about-timeline-caption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

@media (min-width: 900px) {
  .page-about .about-timeline-caption {
    text-align: center;
  }
}

.page-about .about-milestone {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 4px solid var(--c-green);
  padding: 18px 16px;
  margin-bottom: 14px;
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}

@media (min-width: 900px) {
  .page-about .about-milestone {
    padding: 22px 24px;
  }
}

@media (hover: hover) {
  .page-about .about-milestone:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateX(4px);
  }
}

.page-about .about-milestone-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.page-about .about-milestone-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-green);
  background: rgba(0, 255, 136, 0.1);
  padding: 6px 10px;
}

.page-about .about-milestone-head h3 {
  flex: 1 1 160px;
  color: var(--c-white);
  font-size: 19px;
  margin: 0;
}

.page-about .about-milestone-toggle {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--c-green);
  background: transparent;
  border: 1px solid rgba(0, 255, 136, 0.45);
  padding: 8px 12px;
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.page-about .about-milestone-toggle:hover,
.page-about .about-milestone-toggle:focus-visible {
  background: var(--c-green);
  color: var(--c-dark);
}

.page-about .about-milestone-detail {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .about-milestone[data-open="false"] .about-milestone-detail {
  display: none;
}

.page-about .about-cert-grid {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-about .about-cert-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: stretch;
  }
}

.page-about .about-cert-main {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .about-cert-badge {
  background: var(--c-white);
  border: 1px solid rgba(26, 42, 58, 0.08);
  border-left: 4px solid var(--c-green);
  padding: 24px 22px;
  box-shadow: 8px 8px 0 rgba(26, 42, 58, 0.06);
}

.page-about .about-cert-badge h3 {
  margin-top: 14px;
  margin-bottom: 8px;
  font-size: 20px;
}

.page-about .about-cert-badge p {
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

.page-about .about-cert-mark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-deep);
  background: var(--c-green);
  padding: 8px 14px;
}

.page-about .about-cert-list {
  background: var(--c-white);
  border: 1px solid rgba(26, 42, 58, 0.08);
  padding: 22px;
}

.page-about .about-cert-list h3 {
  margin-bottom: 14px;
  font-size: 19px;
}

.page-about .about-cert-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about .about-cert-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.6;
}

.page-about .about-cert-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 12px;
  height: 2px;
  background: var(--c-green);
}

.page-about .about-cert-img {
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

@media (min-width: 900px) {
  .page-about .about-cert-img img {
    min-height: 100%;
  }
}

.page-about .about-cta {
  padding-block: clamp(40px, 7vw, 80px);
}

.page-about .about-cta-inner {
  padding: 32px 24px;
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, transparent 46%),
    var(--c-dark);
  color: var(--c-white);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

@media (min-width: 900px) {
  .page-about .about-cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    padding: 44px 40px;
  }
}

.page-about .about-cta h2 {
  color: var(--c-white);
  margin-bottom: 8px;
}

.page-about .about-cta p {
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 18px;
}

@media (min-width: 900px) {
  .page-about .about-cta p {
    margin-bottom: 0;
  }
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .btn-ghost {
  border-color: rgba(255, 255, 255, 0.32);
  color: var(--c-white);
}

.page-about .about-cta .btn-ghost:hover,
.page-about .about-cta .btn-ghost:focus-visible {
  background: rgba(255, 255, 255, 0.1);
}

.page-about {
  --pos: inherit;
}